Add directives to force stop unwinding.
On aarch64/x86/x86_64 add a macro that inserts a cfi directive that will
stop unwinding.
For arm, clang doesn't allow emitting .cantunwind, so add a comment and
leave it the same as it current is.
Add this macro to __libc_init and __start_thread.
Also, remove duplicate compilation of libc_init_static.cpp that already
includes the static library that includes that file.
Bug: 15469122
Test: Did unwinds using new unwinder tool (unwind) and debuggerd -b
Test: and verified new unwinder works on aarch64/x86/x86_64.
Test: Verified that it works on old unwinder for aarch64/x86, but
Test: x86_64 doesn't work properly, but as well as before.
Change-Id: I77302e8f6c7ba1549d98a4a164106ee82c9ecadc
diff --git a/libc/bionic/libc_init_static.cpp b/libc/bionic/libc_init_static.cpp
index 5e06d39..93a63b5 100644
--- a/libc/bionic/libc_init_static.cpp
+++ b/libc/bionic/libc_init_static.cpp
@@ -40,6 +40,7 @@
#include "pthread_internal.h"
#include "private/bionic_globals.h"
+#include "private/bionic_macros.h"
#include "private/bionic_page.h"
#include "private/bionic_tls.h"
#include "private/KernelArgumentBlock.h"
@@ -82,6 +83,8 @@
void (*onexit)(void) __unused,
int (*slingshot)(int, char**, char**),
structors_array_t const * const structors) {
+ BIONIC_STOP_UNWIND;
+
KernelArgumentBlock args(raw_args);
__libc_init_main_thread(args);